System Interface Unit (Siu) - Motorola PowerQUICC II MPC8280 Series Reference Manual

Chapter 4

System Interface Unit (SIU)

The system interface unit (SIU) consists of several functions that control system start-up
and initialization, as well as operation, protection, and the external system bus. Key
features of the SIU include the following:
• System configuration and protection
• System reset monitoring and generation
• Clock synthesizer
• Power management
• 60x bus interface
• Flexible, high-performance memory controller
• Level-two cache controller interface
• PCI interface
• IEEE 1149.1 test-access port (TAP)
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Chapter 4. System Interface Unit (SIU)
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